use PY_SET_ATTR_FAIL and PY_SET_ATTR_SUCCESS return values so the fake subclassing can know if a value failed to be set or if it was missing from the type. (with PY_SET_ATTR_MISSING)
Also noticed some other mistakes.
- KX_LightObject, setting the type didnt check for an int.
- KX_SoundActuator, didnt return an error when assigning an invalid orientation value
- KX_GameObject, worldOrientation didnt return an error value.
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